I found these at Target yesterday and I already love them!!! I wear my hair put up with bobby pins a lot because I'm pretty lazy when it comes to fixing my hair. These are SO MUCH EASIER than bobby pins.
The package comes with two spin pins, I saw them in blond and brunette and I got the blond shown above. You pull your hair back to the nape of your neck and twist it into a bun. Then take one spin pin and spin it into the bun clock-wise. Take the other pin and spin it in from the opposite side of the bun. Voila! That easy!
I have no idea how it works or why it holds your hair in... but it does and I love them! You can also do a low bun or a side bun to change it up a bit.